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Bulletin issued at 13:02 HKT 02/Nov/2018

At 1 p.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 64 per cent.
During the past hour the mean UV Index recorded at King's Park was 6. The intensity of UV radiation was high.

The air temperatures at other places were:

King's Park 24 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 23 degrees;
Lau Fau Shan 21 degrees;
Tai Po 22 degrees;
Sha Tin 23 degrees;
Tuen Mun 22 degrees;
Tseung Kwan O 26 degrees;
Sai Kung 23 degrees;
Cheung Chau 24 degrees;
Chek Lap Kok 21 degrees;
Tsing Yi 24 degrees;
Shek Kong 23 degrees;
Tsuen Wan Ho Koon 22 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 24 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 23 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 23 degrees;
Stanley 26 degrees;
Kwun Tong 25 degrees;
Sham Shui Po 26 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 24 degrees.

Here is the information on Tropical Depression Yutu at noon:
Location: 20.8 degrees north, 116.4 degrees east.


Note: The data above is provisional. Only limited data validation has been carried out.


Climatological Information for 2 Nov

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 12:45 HKT 02/Nov/2018

Here is the latest weather bulletin issued by the Hong Kong Observatory.

The northeast monsoon is affecting the coast of Guangdong.

Tropical Storm Yutu has weakened into a tropical depression. At noon, Yutu was centred about 40 kilometres west-northwest of Dongsha. It is forecast to move slowly, linger over the northeastern part of the South China Sea and dissipate gradually.

Weather forecast for this afternoon and tonight

Bright periods in the afternoon. Cloudy with one or two light rain patches tonight. Moderate northerly winds, fresh at times. There will be swells.

Outlook : Sunny periods over the weekend and early next week.


(The above forecast period is valid up to 23:59 HKT today, 02/11/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 02/Nov/2018

STORM WARNING AREA: TAIWAN STRAIT.
GALE WARNING AREAS: KWANGTUNG, BASHI, PRATAS, BALINTANG AND PARACEL.

GENERAL SITUATION AT 012100 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS. FOR DETAILS ON TROPICAL STORM YUTU (1826), PLEASE REFER TO THE 3-HRLY SHIPPING WARNINGS.

MARINE FORECAST FOR 24 HOURS FROM 020100 UTC:

HONG KONG= N 5-6. A FEW SHOWERS. SEA 2-3 M. SWELL NE 2-3 M, SE 2-3 M. TEMP 26-22 C. =
KWANGTUNG= N TO NE 6-7, 8-9 IN E. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS IN E. SEA 3-4 M, 6-8 M IN E. SWELL NE 3-5 M, SE 3-5 M. =
TAIWAN STRAIT= NE 8-9, OCNL 10. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA UP TO 10 M. SWELL NE 3-5 M. =
BASHI= E TO NE 8-9. DOWN TO 1000 M IN SCT HEAVY SQUALLY SHOWERS AND TS. SEA 6-8 M. SWELL NE 5 M. =
PRATAS= CYCLONIC 8-9. DOWN TO 500 M IN FRQ HEAVY SQUALLY SHOWERS AND TS. SEA 6-8 M. SWELL NE 5 M, SE 5 M. =
BALINTANG= SE 6-7, OCNL 8. ISOL SHOWERS AND TS. SEA UP TO 6 M. SWELL NE 5 M. =
SCARBOROUGH= SW 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 5 M. =
PARACEL= N TO NW 8-9. ISOL SHOWERS. SEA 6-8 M. SWELL NE 3-5 M. =
TONKIN= N 6-7. FINE. SEA 3-4 M. SWELL NE 2 M. =
DANANG= N 6-7. FINE. SEA 3-4 M. SWELL NE 2 M. =
NNNN
Abbreviations:
KT, VRB, SLW, FRQ - knot, variable, slow, frequent STNR, QSTNR, C - stationary, quasi-stationary, degrees celsius WKN, INTSF, INTST, NC - weaken, intensify, intensity, no change LGT, ISOL, SCT, OCNL - light, isolated, scattered, occasional CLD, DZ, TS - cloudy, drizzle, thunderstorm

The date and time are specified by a 6-digit number DDHHMM. DD stands for the day of month, HH represents the hour while MM indicates the minute in UTC.


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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

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    Bulletin issued at 12:30 HKT 02/Nov/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 02 November 2018

    Warnings:
    Gale force winds in Nan'ao. Strong winds in Hong Kong adjacent waters, Shanwei, south of Hong Kong and Shangchuan Dao.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters.

    Tropical Storm Yutu has weakened into a tropical depression. At noon, Yutu with maximum sustained winds of about 55 kilometres per hour near its centre was located at 20.8 degrees north, 116.4 degrees east. It is forecast to move slowly, linger over the northeastern part of the South China Sea and dissipate gradually.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North force 5 to 6.
    A few showers.
    Moderate to rough seas.

    Nan'ao:
    Northeast force 8 to 9.
    Heavy squally showers and thunderstorms.
    Very rough to high seas.

    Shanwei:
    Cyclonic force 6 to 7.
    Squally showers and thunderstorms.
    Rough seas.

    South of Hong Kong and Shangchuan Dao:
    North force 6 to 7.
    Rough seas.

    Outlook for the next 48 hours
    Northeasterly winds of force 6. Isolated showers and thunderstorms.

    Latest reports from south China coastal weather stations
    --------------------------------------------------------

    Waglan Island Wind north force 4
      Visibility 20 Kilometres

    Shantou Wind northeast force 2
      Visibility 5000 Metres in rain

    Huangmaozhou Wind north-northwest force 4

    Macau Wind north force 3
      Visibility 10 Kilometres

    Xisha Wind northeast force 2
      Visibility 15 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 12:30 HKT 02/NOV/2018
    (Next update at 17:30 HKT 02/NOV/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS ON HIGH GROUND.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
     TROPICAL STORM YUTU HAS WEAKENED INTO A TROPICAL
     DEPRESSION. AT NOON, YUTU WAS CENTRED NEAR 20.8
     DEGREES NORTH 116.4 DEGREES EAST AND IS FORECAST
     TO MOVE SLOWLY, LINGER OVER THE NORTHEASTERN
     PART OF THE SOUTH CHINA SEA AND DISSIPATE
     GRADUALLY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  360/10-15
       OFFSHORE:  360/15-20                            26-20
   B.   2000 FT:  050/20-25                            16
   C.   5000 FT:  080/25                               14
   D.  10000 FT:  350/10                               9
   E.  18000 FT:  280/20                               MS2
   F.  24000 FT:  250/25                               MS14
   G.  30000 FT:  220/30                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY.  ISOLATED SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT SCT 3500 FT BKN 8000 FT
   K. VISIBILITY    : 8 KM. TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 8800 FT
   M. TURBULENCE    : MOD
   N. SEA STATE     : 2.5-3.5 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY WINDS. CLOUDY.=

    ===================================================================
Note: The forecast could be updated before the next issue time 
whenever there is newly expected occurrence or non-occurrence 
of significant weather as described below which may be hazardous 
to aircraft within 100-km radius of Hong Kong:

(a) Change of the tropical cyclone category
(b) Strong, Gale, Storm, and Hurricane force winds
(c) Thunderstorm/CBs
(d) Severe gusts
(e) Severe turbulence
(f) Significant low stratus
(g) Fog or thick haze/sandstorm/duststorm 
    causing significant reduction of visibility
(h) Volcanic ash
(i) Radioactive cloud
===================================================================
    Aviation Weather Observation and Forecast Information for Hong Kong International Airport
    To know more about clouds, please see Commonly observed clouds in Hong Kong.

    sigmet
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    Significant Weather Information (SIGMET)

    The Airport Meteorological Office is responsible for monitoring hazardous weather and phenomena in the atmosphere that may affect the safety of aircraft operations within a designated airspace over the northern part of the South China Sea. Weather forecasters at the Airport Meteorological Office issues SIGMET information when hazardous weather and phenomena in the atmosphere such as thunderstorms, tropical cyclones, turbulence, icing occur or are expected to occur in the airspace.

    The latest significant weather information
    issued by the Hong Kong Observatory at 09:45 HKT on 02 Nov 18

    VHHK SIGMET 1 VALID 020140/020600 VHHH- VHHK HONG KONG FIR TC YUTU PSN N2048 E11636 CB OBS AT 00Z WI 120NM OF TC CENTRE TOP FL400 WKN FCST AT 0600Z TC CENTRE PSN N2054 E11636= VHHK SIGMET 3 VALID 020150/020600 VHHH- VHHK HONG KONG FIR TC YUTU PSN N2048 E11636 CB OBS AT 0000Z WI 120NM OF TC CENTRE TOP FL400 WKN FCST AT 0600Z TC CENTRE PSN N2054 E11636=

    Please click here for more about the SIGMET

    Tropical Cyclone Warning
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    Tropical Cyclone Warning

    There is no tropical cyclone warning signal.

    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

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    TROPICAL CYCLONE WARNING FOR SHIPPING
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    Tropical Cyclone Warning for Shipping

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    Bulletin issued at 12:30 HKT 02/Nov/2018


    Tropical Cyclone Warning

    Tropical Storm Yutu (1826) has weakened into a Tropical Depression with central pressure 1002 hectopascals. At 020300 UTC, it was centred within 60 nautical miles of two zero point eight degrees north (20.8 N) one one six point five degrees east (116.5 E) and is forecast to be slow moving for the next 18 hours.

    Maximum winds near the centre are estimated to be 30 knots.

    Radius of over 2 metre waves 120 nautical miles.

    Forecast position and intensity at 030300 UTC
    Dissipated over sea.



    The Hong Kong Observatory's tropical cyclone warnings for shipping are issued about one and a half hours after the time of observation. They incorporate additional information derived from surface and upper-air data and may therefore be slightly different from the real-time satellite or radar-based positions given in the hourly bulletins for public.

    While the forecast positions and track indicate the most likely future path of the tropical cyclone, they may deviate from the actual path taken by the storm.

    Tropical Cyclone Track
    YESTERDAY'S WEATHER AND RADIATION LEVEL Skip to main content
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    Yesterday's Weather and Radiation Level

    Bulletin issued at 00:15 HKT 02/Nov/2018 
    HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:
------------------------------------------------------

Hong Kong Observatory
Maximum Air Temperature                     27.4 C
Minimum Air Temperature                     22.6 C
Grass Minimum Temperature                   19.6 C
Relative Humidity                        29 - 67 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2077.6 mm
Against an average of                     2334.6 mm

Other Stations                Min                  Max
King's Park                  21.7 C               27.0 C
Wong Chuk Hang               22.2 C               28.3 C
Ta Kwu Ling                  21.1 C               27.2 C
Lau Fau Shan                 20.8 C               27.0 C
Tai Po                       20.8 C               26.6 C
Sha Tin                      21.9 C               27.2 C
Tuen Mun                     22.0 C               27.6 C
Tseung Kwan O                21.8 C               28.4 C
Sai Kung                     21.7 C               25.7 C
Cheung Chau                  21.0 C               29.4 C
Chek Lap Kok                 21.9 C               28.6 C
Tsing Yi                     22.1 C               27.4 C
Shek Kong                    20.7 C               27.5 C
Tsuen Wan Ho Koon            20.2 C               25.6 C
Tsuen Wan Shing Mun Valley   21.8 C               28.1 C
Hong Kong Park               22.5 C               27.6 C
Shau Kei Wan                 22.0 C               28.8 C
Kowloon City                 21.2 C               26.7 C
Happy Valley                 22.7 C               28.8 C
Wong Tai Sin                 21.5 C               27.7 C
Stanley                      22.6 C               28.3 C
Kwun Tong                    21.8 C               27.7 C
Sham Shui Po                 22.0 C               28.8 C
Kai Tak Runway Park          22.1 C               28.2 C
Yuen Long Park               21.1 C               28.4 C
Tai Mei Tuk               19.3 C               27.4 C

Duration of sunshine (King's Park):              7.0 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 7.
 

Yesterday's (01 Nov 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.15 microsievert per hour.  These are within the normal
range of fluctuation of the background radiation level in
Hong Kong (see Note). The average dose rates measured at the
radiation monitoring stations over various parts of the
territory were as follows :

Station                     Yesterday's average
                            (microsievert/hour)
Ping Chau                           0.09
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.14

Note

      

    1. From readings taken at various locations in Hong Kong in the
past, the hourly mean ambient gamma radiation dose rate may
vary between 0.06 and 0.3 microsievert per hour. (1
microsievert = 0.000001 sievert = 0.001 millisievert)

    2. Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.

    3. Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.

    4. The data displayed is provisional. Only limited data
validation has been carried out.
    Climatological Information for 01 Nov
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